Hub­ble re­pair mis­sion

All About Space - - Nasa At 60 -

14 Hub­ble’s gi­ant mir­ror was very nearly its down­fall. Ini­tial im­ages from the tele­scope were dis­ap­point­ing, and the fault was traced to the mir­ror’s grind­ing and pol­ish­ing process – one lens used to check the shape was out of po­si­tion.

The re­sponse to this was a 1993 ser­vic­ing mis­sion, STS-61, that had been sched­uled to go to the tele­scope for main­te­nance any­way. An in­stru­ment called the Cor­rec­tive Op­tics Space Tele­scope Ax­ial

Re­place­ment or COSTAR was added to Hub­ble, re­plac­ing one of its orig­i­nal in­stru­ments. As cor­rec­tive op­tics, it was es­sen­tially giv­ing the tele­scope glasses.

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.